US4388203A - Composition and method for melting frozen aqueous solutions - Google Patents

Composition and method for melting frozen aqueous solutions Download PDF

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US4388203A
US4388203A US06/323,158 US32315881A US4388203A US 4388203 A US4388203 A US 4388203A US 32315881 A US32315881 A US 32315881A US 4388203 A US4388203 A US 4388203A
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composition
water
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Kenneth H. Nimerick
Claude T. Copeland
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Dow Chemical Co
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Dow Chemical Co
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
    • C09K3/185—Thawing materials

Definitions

  • particulate materials e.g., gravel, coal and the like
  • metal containers e.g., dump trucks, railroad cars and the like.
  • metal parts such as railroad switches and scales tend to freeze up under such conditions.
  • the moisture on the surface of particulate materials freeze, the ice which is formed acts as a strong adhesive which causes the particulate materials to form a solid and bond to the interior surfaces of such containers and carriers, thus making it difficult to completely clean the surface.
  • Moisture may come in contact with the interior of such containers and carriers through natural sources such as being carried on the particulate materials, melting snow, rain and the like.
  • U.S. Pat. No. 4,117,214 a method for reducing the strength of frozen water by dissolving in the water prior to freezing a composition containing both a water-soluble polyhydroxy compound or ether thereof, e.g., propylene glycol, and a water-soluble organic nonvolatile compound having a hydrophilic group such as sodium acetate.
  • the compositions can be added to particulate materials such as coal prior to exposure to freezing conditions.
  • U.S. Pat. No. 4,163,079 a composition similar to that taught in U.S. Pat. No. 4,117,214 is employed to freeze-proof conveyor belts. However, this composition is applied to or dissolved in the aqueous solution before it freezes.
  • U.S. Pat. Nos. 2,116,682 and 2,436,146 teach treating coal with a composition containing water, a gel forming colloid and various inorganic salts.
  • a polyhydric alcohol is included to prevent the salt from degrading the colloid.
  • Macaluso et al. U.S. Pat. No. 3,794,472, treat coal with an emulsion to prevent freezing of the coal.
  • a thawing agent which contains at least one component from each of the following substantially water soluble components (1), (2) and/or (3) comprising (1) a polyhydroxy compound or monoalkyl ether thereof, (2) an organic nonvolatile compound having at least one hydrophilic group, (2) being different from (1), (3) an inorganic salt, which functions to lower the freezing point of water wherein only one of (2) or (3) need be present but both may be present; (4) an organic polymer which functions to increase the viscosity and tackiness of the composition sufficiently to permit the composition to maintain an essentially uniform thickness when applied to a frozen mass; and (5) water as a carrying fluid.
  • the composition is applied to the surface of a frozen mass of particles, e.g. coal, etc. or other frozen surfaces.
  • a frozen mass of particles e.g. coal, etc. or other frozen surfaces.
  • railroad cars loaded with frozen coal or other frozen material; railroad switches, scales and the like can be treated with the composition to thaw the same.
  • water-soluble sufficiently soluble so that a sufficient quantity of said compound may be dissolved in water to noticeably reduce the tendency of water to freeze.
  • Component (1) is a water-soluble polyhydroxy compound.
  • a preferred group is the polyhydroxyalkanes.
  • Typical members of that class are ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, glycerine and sugar. Of those materials, ethylene glycol is preferred.
  • the monoalkyl ethers, such as the monobutyl ether of ethylene glycol, are also useful. Mixtures of these materials such as a mixture of alkylene glycols may also be employed. A preferred mixture is ethylene glycol and 1,2-propylene glycol.
  • Component (2) is a water soluble organic nonvolatile compound which functions to terminate ice crystal growth.
  • the compound must be nonvolatile, i.e., have a sufficiently low vapor pressure at the conditions of use, so that substantially none of the compound will vaporize out of the aqueous solution before the water freezes.
  • This compound should have at least one hydrophilic group such as amine, carboxyl, or carboxylate groups.
  • the compound may be polymeric or nonpolymeric. Typical of the latter are fumaric acid, sodium formate, urea, glycolic acid, tetrasodium salt of ethylenediamine tetraacetic acid, sodium acetate and acetic acid. Other amines and carboxylic materials will be known to the skilled worker.
  • polystyrene resin Typical of the polymeric materials are polyacrylamide, polyvinyl pyrrolidone, polyethyleneimine, polyacrylates, polyamide copolymers such as that sold commercially as Arco S-232, and the natural gums, such as guar gum. All of the useful polymers will be of relatively low molecular weight in order to be water soluble. Moreover, they are used in quantities which do not materially affect the viscosity of the solution as do the thickening agents which are more fully defined hereinafter. Preferably an acetate and/or formate is employed.
  • Component (3) comprises a salt(s), such as an inorganic halide salt, e.g., NaCl, CaCl 2 , sodium bromide, calcium bromide and the like which functions to lower the freezing point of water.
  • a salt(s) such as an inorganic halide salt, e.g., NaCl, CaCl 2 , sodium bromide, calcium bromide and the like which functions to lower the freezing point of water.
  • an inorganic halide salt e.g., NaCl, CaCl 2 , sodium bromide, calcium bromide and the like which functions to lower the freezing point of water.
  • an inorganic halide salt e.g., NaCl, CaCl 2 , sodium bromide, calcium bromide and the like which functions to lower the freezing point of water.
  • the salts can be employed.
  • Component (4) comprises a sufficient quantity of a thickening agent or viscosity builder which functions to increase the viscosity and tackiness of the composition sufficiently to maintain an essentially even coating of the composition when applied to a frozen surface.
  • the thickening agent can comprise any of the polymeric materials hereinbefore described for Component 2 but which have sufficient molecular weight to provide the desired thickening property.
  • Component (5) is water which functions as a carrying medium.
  • the amount of each material incorporated in the composition and the ratio of the components may be varied within wide limits.
  • the composition may contain the following constituents, expressed as percent by weight. More than one of each component in each group of constituents may be employed.
  • Organic nonvolatile compound 0 to about 25 percent.
  • Inorganic salt 0 to about 45 percent, wherein at least one of 2 or 3 is present.
  • Thickener a sufficient amount to increase the viscosity and tackiness of the composition to maintain an essentially even coating of the composition when applied to a frozen surface and permit even penetration upon thawing thereof.
  • a sufficient quantity is employed to impart a viscosity of about 25 to about 1500 centipoise as measured in a Brookfield LVF viscometer at 60 rpm at 74° F.
  • a preferred composition comprises ethylene glycol about 10 to about 32 percent; propylene glycol about 10 to 32 percent; sodium acetate or sodium formate about 0.5 to about 16 percent; calcium chloride or magnesium chloride about 5 to about 35 percent; water about 20 to about 60 percent and a sufficient quantity of a hydroxyethyl cellulose polymer to form a viscous composition having a viscosity of about 25 to about 700 centipoise as measured on a Brookfield LVF viscometer at 60 rpm and 74° F.
  • compositions may be added to serve functional purposes.
  • dyes may be added to assist in effective application
  • bactericides may be added to protect the thickening agent, and stabilizers, antioxidants, corrosion inhibitors and the like may be employed for their functional purposes.
  • composition of the present invention can be applied to the surface to be thawed, whether it be a railroad switch, frozen mass of coal in railroad car or truck, conveyor belts, in any convenient manner, such as by spraying, brushing, dipping or the like.
  • the amount applied depends primarily on the thickness of frozen mass or surface to be thawed and on economic factors, too much resulting in a waste of composition. Generally from about 0.003 to about 0.03 gallon per square foot of surface (about 120 cc to about 1250 cc per square meter) is effective for thawing thin coatings of ice. Larger amounts will be required to thaw thick masses of frozen particulate matter.
  • the coal was frozen at 2° to 5° F.
  • Various test formulations at temperatures of 74° F. and 5° F. were added to the surface of the frozen coal. The time required for the coal to absorb the fluid was recorded. The treated coal was allowed to soak about 12 hours before defining the depth at which the coal was melted.
  • the amount of certain compositions to melt various sizes of coal was determined in a similar manner using 12 inch long Plexiglas cylinders. In these tests, the coal and compositions were each cooled to 5° F. The composition was added to the surface of the frozen coal.
  • composition of A but instead of the hydroxyethyl cellulose polymer of A, 0.2 part of a polyethylene oxide polymer sold by Union Carbide having the trade name Polyox WSR-301, characterized as water soluble resin having a molecular weight of about 4,000,000, was employed.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)

Abstract

Frozen water is thawed by applying to the surface thereof a composition containing water and substantially water soluble components comprising (1) a polyhydroxy compound or monoalkyl ether thereof, (2) an organic nonvolatile compound having at least one hydrophilic group, (2) being different than (1), (3) an inorganic salt which functions to lower the freezing point of water, wherein only one of (2) or (3) need be present but both may be present, (4) sufficient quantity of an organic polymer which functions to increase the viscosity and tackiness of the composition sufficiently to permit a uniform layer of the composition to be placed on the frozen surface and (5) H2 O.

Description

BACKGROUND OF THE INVENTION
In freezing environments a problem exists in storing and transporting particulate materials, e.g., gravel, coal and the like, in metal containers, e.g., dump trucks, railroad cars and the like. Also, metal parts such as railroad switches and scales tend to freeze up under such conditions. When the moisture on the surface of particulate materials freeze, the ice which is formed acts as a strong adhesive which causes the particulate materials to form a solid and bond to the interior surfaces of such containers and carriers, thus making it difficult to completely clean the surface. Moisture may come in contact with the interior of such containers and carriers through natural sources such as being carried on the particulate materials, melting snow, rain and the like.
It is obvious that particulate materials, such as coal, when frozen into a container can cause serious problems in unloading and the like. Many approaches to solving the problem have been suggested. For example, sodium chloride and calcium chloride have been added to moist coal, as it is being loaded, with some success.
Attempts have been made to coat the inside of the containers and carriers with a hydrocarbon oil, for example, kerosene. This has provided some help in preventing the particulate material from freezing to the interiors. However, it has not met with complete success. Other techniques have been tried for melting the frozen water, also without complete success.
THE PRIOR ART
In U.S. Pat. No. 4,117,214 a method is taught for reducing the strength of frozen water by dissolving in the water prior to freezing a composition containing both a water-soluble polyhydroxy compound or ether thereof, e.g., propylene glycol, and a water-soluble organic nonvolatile compound having a hydrophilic group such as sodium acetate. The compositions can be added to particulate materials such as coal prior to exposure to freezing conditions. In U.S. Pat. No. 4,163,079, a composition similar to that taught in U.S. Pat. No. 4,117,214 is employed to freeze-proof conveyor belts. However, this composition is applied to or dissolved in the aqueous solution before it freezes.
In U.S. Pat. No. 3,298,804 the freezing together of coal particles is prevented by employing a composition of a hydrocarbon and a given class of surface-active compounds.
U.S. Pat. Nos. 2,116,682 and 2,436,146 teach treating coal with a composition containing water, a gel forming colloid and various inorganic salts. A polyhydric alcohol is included to prevent the salt from degrading the colloid.
Mori, U.S. Pat. No. 2,222,370 teaches a dust settling composition for coal mines which is an emulsion which may contain small quantities of ethylene glycol and oleic acid to give the emulsion greater permanence or stability, but no mention is made of cold weather applications.
Macaluso et al., U.S. Pat. No. 3,794,472, treat coal with an emulsion to prevent freezing of the coal.
Other art relating principally to deicing compositions or freeze depressants, particularly those suited for aircraft deicing applications, include Korman, U.S. Pat. No. 2,101,472, which teaches a gel containing gelatine to which is added as an antifreeze substance, glycerol and/or a glycol; West et al., U.S. Pat. No. 2,373,727, which teaches a composition such as in Korman, but also including a hydrocarbon to provide an emulsion, Fain et al., U.S. Pat. No. 2,716,068, which teaches a composition of a glycol, at least one of potassium thiocyanate, potassium acetate, urea, or certain inorganic salts, and optionally sodium nitrite, and Dawtrey et al., U.S. Pat. No. 3,350,314, which teaches a foamable composition of water, an alkylene polyol, and a long chain aliphatic tertiary amine.
Scott, Jr., et al., U.S. Pat. Nos. 3,624,243 and 3,630,913, each relate to chemical deicers containing corrosion inhibitors making them specially suited for use on airport runways.
Finally, Shapiro, U.S. Pat. No. 2,454,886 relates to the prevention of mist and frost on glass and similar sheet material.
SUMMARY OF THE INVENTION
A thawing agent is provided which contains at least one component from each of the following substantially water soluble components (1), (2) and/or (3) comprising (1) a polyhydroxy compound or monoalkyl ether thereof, (2) an organic nonvolatile compound having at least one hydrophilic group, (2) being different from (1), (3) an inorganic salt, which functions to lower the freezing point of water wherein only one of (2) or (3) need be present but both may be present; (4) an organic polymer which functions to increase the viscosity and tackiness of the composition sufficiently to permit the composition to maintain an essentially uniform thickness when applied to a frozen mass; and (5) water as a carrying fluid.
The composition is applied to the surface of a frozen mass of particles, e.g. coal, etc. or other frozen surfaces. Railroad cars loaded with frozen coal or other frozen material; railroad switches, scales and the like can be treated with the composition to thaw the same.
By "water-soluble" is meant sufficiently soluble so that a sufficient quantity of said compound may be dissolved in water to noticeably reduce the tendency of water to freeze.
DETAILED DESCRIPTION OF THE INVENTION
Component (1) is a water-soluble polyhydroxy compound. A preferred group is the polyhydroxyalkanes. Typical members of that class are ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, glycerine and sugar. Of those materials, ethylene glycol is preferred. The monoalkyl ethers, such as the monobutyl ether of ethylene glycol, are also useful. Mixtures of these materials such as a mixture of alkylene glycols may also be employed. A preferred mixture is ethylene glycol and 1,2-propylene glycol.
Component (2) is a water soluble organic nonvolatile compound which functions to terminate ice crystal growth. The compound must be nonvolatile, i.e., have a sufficiently low vapor pressure at the conditions of use, so that substantially none of the compound will vaporize out of the aqueous solution before the water freezes. This compound should have at least one hydrophilic group such as amine, carboxyl, or carboxylate groups. The compound may be polymeric or nonpolymeric. Typical of the latter are fumaric acid, sodium formate, urea, glycolic acid, tetrasodium salt of ethylenediamine tetraacetic acid, sodium acetate and acetic acid. Other amines and carboxylic materials will be known to the skilled worker. Typical of the polymeric materials are polyacrylamide, polyvinyl pyrrolidone, polyethyleneimine, polyacrylates, polyamide copolymers such as that sold commercially as Arco S-232, and the natural gums, such as guar gum. All of the useful polymers will be of relatively low molecular weight in order to be water soluble. Moreover, they are used in quantities which do not materially affect the viscosity of the solution as do the thickening agents which are more fully defined hereinafter. Preferably an acetate and/or formate is employed.
Component (3) comprises a salt(s), such as an inorganic halide salt, e.g., NaCl, CaCl2, sodium bromide, calcium bromide and the like which functions to lower the freezing point of water. One or more of the salts can be employed.
Component (4) comprises a sufficient quantity of a thickening agent or viscosity builder which functions to increase the viscosity and tackiness of the composition sufficiently to maintain an essentially even coating of the composition when applied to a frozen surface. The thickening agent can comprise any of the polymeric materials hereinbefore described for Component 2 but which have sufficient molecular weight to provide the desired thickening property.
Component (5) is water which functions as a carrying medium.
The amount of each material incorporated in the composition and the ratio of the components may be varied within wide limits.
The composition may contain the following constituents, expressed as percent by weight. More than one of each component in each group of constituents may be employed.
Component
1. Polyhydroxy compound and/or monoalkyl ether thereof, about 5 percent to about 95 percent.
2. Organic nonvolatile compound, 0 to about 25 percent.
3. Inorganic salt, 0 to about 45 percent, wherein at least one of 2 or 3 is present.
4. Thickener, a sufficient amount to increase the viscosity and tackiness of the composition to maintain an essentially even coating of the composition when applied to a frozen surface and permit even penetration upon thawing thereof. Generally, a sufficient quantity is employed to impart a viscosity of about 25 to about 1500 centipoise as measured in a Brookfield LVF viscometer at 60 rpm at 74° F.
5. H2 O, about 5 to about 75 percent.
A preferred composition comprises ethylene glycol about 10 to about 32 percent; propylene glycol about 10 to 32 percent; sodium acetate or sodium formate about 0.5 to about 16 percent; calcium chloride or magnesium chloride about 5 to about 35 percent; water about 20 to about 60 percent and a sufficient quantity of a hydroxyethyl cellulose polymer to form a viscous composition having a viscosity of about 25 to about 700 centipoise as measured on a Brookfield LVF viscometer at 60 rpm and 74° F.
Other constituents may be added to the composition to serve functional purposes. Thus, dyes may be added to assist in effective application, bactericides may be added to protect the thickening agent, and stabilizers, antioxidants, corrosion inhibitors and the like may be employed for their functional purposes.
The composition of the present invention can be applied to the surface to be thawed, whether it be a railroad switch, frozen mass of coal in railroad car or truck, conveyor belts, in any convenient manner, such as by spraying, brushing, dipping or the like. The amount applied depends primarily on the thickness of frozen mass or surface to be thawed and on economic factors, too much resulting in a waste of composition. Generally from about 0.003 to about 0.03 gallon per square foot of surface (about 120 cc to about 1250 cc per square meter) is effective for thawing thin coatings of ice. Larger amounts will be required to thaw thick masses of frozen particulate matter.
EXAMPLE
A 2 inch thick layer of 3/8"×28 mesh Thacker seam coal containing 10 percent moisture was lightly compacted in a 23/4 inch internal diameter Plexiglas cylinder. The coal was frozen at 2° to 5° F. Various test formulations at temperatures of 74° F. and 5° F. were added to the surface of the frozen coal. The time required for the coal to absorb the fluid was recorded. The treated coal was allowed to soak about 12 hours before defining the depth at which the coal was melted. The amount of certain compositions to melt various sizes of coal was determined in a similar manner using 12 inch long Plexiglas cylinders. In these tests, the coal and compositions were each cooled to 5° F. The composition was added to the surface of the frozen coal. After five minutes soaking, an additional amount of 74° F. coal equivalent to twice the height of the originally treated coal was added. After one days' soaking, the depth of coal that was melted was determined by dismantling the sample. This data was reported in gals/ft2 /inch of penetration. The viscosity of each of the compositions was determined on a Brookfield LVF viscometer. The compositions used and the resulting data are set forth below.
Thawing Agent (parts by weight)
A. 14.96 ethylene glycol; 14.96 propylene glycol; 1.87 sodium acetate; 50.51 H2 O; 16.4 CaCl2 ; 0.04 a bactericide identified as BACTERICIDE 40 from NALCO, a minor amount of Alizarine Cyanone Green G Extra dye and 0.2 part of a hydroxyethyl cellulose polymer thickening agent having a molecular weight of 100,000.
B. Same as A except 0.25 part of the hydroxyethyl cellulose was employed.
C. Same as A except 0.3 part of the hydroxyethyl cellulose was employed.
D. Same as A except 0.4 part of the hydroxyethyl cellulose was employed.
E. 14.95 ethylene glycol; 14.95 propylene glycol; 1.87 sodium acetate; 68.62 H2 O; a minor amount of Alizarine Cyanone Green G Extra dye and 0.4 of the thickening agent defined in A.
F. 20.19 ethylene glycol; 20.19 propylene glycol; 2.52 sodium acetate; 57.59 H2 O; a minor amount of Alizarine Cyanone Green G Extra dye and 0.4 of the polymer described in A.
G. 36.4 of a polyglycerine bottoms from the production of glycerine having the following composition: 80 percent by weight of: glycerine 6-11%, diglycerine 19-24%, triglycerine 8-11%, tetraglycerine 6-8%, pentaglycerine 5-7%, highers balance and 20 percent by weight H2 O; 46.9 H2 O, 16.3 CaCl2 and 0.2 part of the polymer described in A.
H. The composition of A but instead of the hydroxyethyl cellulose polymer of A, 0.2 part of a polyethylene oxide polymer sold by Union Carbide having the trade name Polyox WSR-301, characterized as water soluble resin having a molecular weight of about 4,000,000, was employed.
I. Same as G except 0.4 part of the polymer.
J. Same as G except 0.6 part of the polymer.
K. 15.07 ethylene glycol; 15.07 propylene glycol; 1.88 sodium acetate; 30.07 H2 O; a minor amount of Alizarine Cyanone Green G Extra dye; 32 CaCl2 and 0.25 of a thickening agent as defined in A.
L. 22.32 ethylene glycol; 22.32 propylene glycol; 2.78 sodium acetate; 32.0 calcium chloride; 20.33 H2 O; a minor amount of dye and 0.25 of a thickening agent as described in A.
M. 31.21 ethylene glycol; 31.21 propylene glycol; 3.89 sodium acetate; 28.43 H2 O; 5 calcium chloride; a minor amount of Alizarine Cyanone G Extra dye and 0.25 of a thickening agent as defined in A.
N. 16 ethylene glycol; 16 propylene glycol; 16 CaCl2 ; 51.75 H2 O and 0.25 of a thickening agent as defined in A.
O. The same as N except magnesium chloride was substituted for CaCl2.
P. Same as N except sodium chloride was substituted for CaCl2.
Q. Same as N except sodium acetate was substituted for CaCl2.
Same as Q except sodium formate was substituted for sodium acetate.
                                  TABLE I                                 
__________________________________________________________________________
PENETRATION AND/OR MELT PROPERTIES                                        
OF VARIOUS FREEZE RELEASE FORMULATIONS                                    
PENETRATION WITH 74° F. FLUIDS                                     
                              PENETRATION WITH 5° F.               
                                                      BROOKFIELD          
TEST       INCHES   FROZEN         INCHES   FROZEN    VISCOSITY           
FORMU-     PENETRATION                                                    
                    COAL (In.)     PENETRATION                            
                                            COAL (In.)                    
                                                      (cps.)              
LATION                                                                    
      .increment. TIME                                                    
           (MELTED) OBSERVATIONS                                          
                              .increment. TIME                            
                                   (MELTED) OBSERVATIONS                  
                                                      @74°         
                                                           @5°     
__________________________________________________________________________
                                                           F.             
A     22 min.                                                             
           13/8-    1/2-5/8, very weak                                    
                              1 hr.                                       
                                   11/2     1/2, very weak                
                                                      111.25              
                                                           785            
           11/2               54 min.                                     
B     32 min.                                                             
           11/4     3/4, weak 2 hrs.                                      
                                   11/8     7/8, weak 180.0               
                                                           1400           
                              20 min.                                     
C     4 hrs.                                                              
           13/8     5/8, weak 7 hrs.                                      
                                   11/8     7/8, firm 293.8               
                                                           1835           
      16 min.                 11 min.                                     
D     22 hrs.                                                             
           15/8     3/8, very weak                                        
                              23 hrs.                                     
                                   11/2     1/2, weak 685.0               
                                                           3930           
      10 min.                 27 min.                                     
E     >24 hrs.                                                            
           11/4     3/4, strong                                           
                              --   --       --        235.0               
                                                           --             
F     >7 <24                                                              
           15/8     3/8, very weak                                        
                              --   --       --        186.0               
                                                           --             
      hrs.                                                                
G     7 hrs.                                                              
           11/4-    5/8-3/4, weak                                         
                              --   --       --        230  1580           
      23 min.                                                             
           13/8                                                           
H     4 min.                                                              
           15/8     3/8, weak --   --       --        50   165            
I     12 min.                                                             
           11/4     3/4, weak --   --       --        135  645            
J     41 min.                                                             
           1-11/8   7/8-1, strong                                         
                              --   --       --        334  910            
K*    >8 hrs.                                                             
           11/8-    3/4-7/8, weak                                         
                              --   --       --        795  --             
           11/4                                                           
L*    >8 hrs.                                                             
           1/4      15/8-13/4, firm                                       
                              --   --       --        2750 --             
M     10 min.                                                             
           13/4-2   0-1/4 weak                                            
                              --   --       --        35   --             
N     19 min.                                                             
           11/2     1/2, weak --   --       --        148.75              
                                                           --             
O     3 hrs.                                                              
           11/4     3/4, weak --   --       --        183.75              
                                                           --             
      50 min.                                                             
P     7 min.                                                              
           11/2     1/2, weak --   --       --        25.0 --             
Q     14 min.                                                             
           11/4     3/4, weak --   --       --        47.5 --             
R     22 min.                                                             
           11/4     3/4, weak --   --       --        60.0 --             
__________________________________________________________________________
 *Precipitated salt.

Claims (10)

What is claimed is:
1. A method of thawing frozen water which comprises applying to the surface of frozen water a composition comprising: at least one component from each of the following water soluble components (1), (2) and/or (3) comprising (1) a polyhydroxy compound or monoalkyl ether thereof, (2) an organic nonvolatile compound having at least one hydrophilic group, (2) being different from (1), (3) an organic salt which functions to reduce the freezing point of water, (4) an organic polymer which functions to increase the viscosity and tackiness of the composition, and (5) water.
2. The method of claim 1 wherein the constituents are present in the following amounts as percent by weight:
Component (1) about 5.0 to about 95 percent;
Component (2) 0 to about 25 percent;
Component (3) 0 to about 45 percent wherein at least one of (2) or (3) is present;
Component (4) sufficient quantity to increase the viscosity and tackiness of the composition to form an essentially uniform layer of material when placed on the frozen surface; and
Component (5) about 5 to about 75 percent.
3. The method of claim 1 wherein component (1) is selected from the group consisting of glycols and glycerine, component (2) is selected from the group of acetates and formates, component (3) is at least one inorganic halide salt, and component (4) is selected from the group of cellulose and polyethylene oxide polymers.
4. The method of claim 1 wherein the composition comprises: ethylene glycol about 10 to about 32 percent; propylene glycol about 10 to about 32 percent; sodium acetate or sodium formate about 0.5 to about 16 percent; calcium chloride or magnesium chloride about 5 to about 35.0 percent; water about 20 to about 60 percent and a sufficient quantity of hydroxyethyl cellulose polymer to provide a composition having a viscosity of about 25 to about 700 centipoise as measured on a Brookfield LVF viscometer at 60 rpm and 74° F.
5. The method of claim 4 wherein the frozen water is part of a frozen mass of particulate material.
6. The method of claim 5 wherein the particulate material is coal.
7. The method of claim 4 wherein the polymer is a polyethylene oxide polymer.
8. The method of claim 1 wherein the polymer is a polyethylene oxide polymer having a molecular weight of about 4,000,000.
9. The method of claim 1 wherein the frozen water is part of a frozen mass of particulate material.
10. The method of claim 9 wherein the particulate material is coal.
US06/323,158 1981-11-20 1981-11-20 Composition and method for melting frozen aqueous solutions Expired - Fee Related US4388203A (en)

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CA000415515A CA1168428A (en) 1981-11-20 1982-11-15 Composition and method for melting frozen aqueous solutions

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US4585571A (en) * 1985-03-15 1986-04-29 Michael A. Bloom Deicing compositions
US4778615A (en) * 1986-09-09 1988-10-18 The Dow Chemical Company Composition for treating particulate materials and a method for treating particles
US5238592A (en) * 1990-11-02 1993-08-24 Hoechst Aktiengesellschaft Liquid de-icing agent based on acetates and process for melting snow and ice on traffic surfaces with the aid of this agent
US5591375A (en) * 1992-09-24 1997-01-07 Lott; James A. Antifreeze compositions and uses
RU2127293C1 (en) * 1998-01-20 1999-03-10 Товарищество с ограниченной ответственностью "Ассоциация Легхим" Composition for preventing ice crust on roads
RU2135540C1 (en) * 1997-10-20 1999-08-27 АООТ "Кирово-Чепецкий химический комбинат им.Б.П.Константинова" Antiicing composition
US5976400A (en) * 1997-09-19 1999-11-02 Thermo Solutions, Inc. Phase change material and use
RU2141500C1 (en) * 1998-07-22 1999-11-20 Общество с ограниченной ответственностью "Легхим" Composition for prevention of ice coating on roads
EP0992562A1 (en) * 1998-10-02 2000-04-12 Clariant GmbH De-icing composition comprising sodium formate and sodium chloride and its use
US6156226A (en) * 1998-06-10 2000-12-05 Thermo Fibergen, Inc. Liquid and solid de-icing and anti-icing compositions and methods for making same
WO2001042388A3 (en) * 1999-11-30 2002-01-10 21St Century Medicine Prevention of ice nucleation by polyglycerol
FR2820428A1 (en) * 2001-02-06 2002-08-09 Colas Sa Deicing composition used for roads, comprises a melting material and a solution of a hydrosoluble gelling agent
WO2003057794A1 (en) * 2001-12-28 2003-07-17 Grain Processing Corporation A method for inhibiting freeze-clumping of aggregate materials
US20030136940A1 (en) * 1997-09-30 2003-07-24 Richard Sapienza Environmentally benign anti-icing or deicing fluids
US20040079918A1 (en) * 2002-10-28 2004-04-29 Simmons Kevin L. Biobased deicing/anti-icing fluids
WO2005007279A3 (en) * 2003-07-10 2005-04-21 Univ Alaska Fairbanks Compounds for changing the physical properties of ice and methods of use thereof
US20050087720A1 (en) * 2002-10-28 2005-04-28 Samuels William D. Deicing/anti-icing fluids
WO2006041515A1 (en) 2004-09-30 2006-04-20 Nalco Company Product for dust control and freeze control
US20060284137A1 (en) * 2004-05-14 2006-12-21 Tran Bo L Methods and compositions for dust control and freeze control
US20070063168A1 (en) * 1997-09-30 2007-03-22 Richard Sapienza Environmentally benign anti-icing or deicing fluids
US20070295932A1 (en) * 1999-07-26 2007-12-27 Archer-Daniels-Mildland Company Di-icing composition and method
US20080006794A1 (en) * 2003-09-23 2008-01-10 Richard Sapienza Environmentally benign anti-icing or deicing fluids employing triglyceride processing by-products
US20080054219A1 (en) * 1998-01-07 2008-03-06 Sears Petroleum & Transport Corporation Deicing solution
US20100297358A1 (en) * 2009-05-22 2010-11-25 Envirotech Services, Inc. Alkylcellulose and salt compositions for dust control applications
US20100327215A1 (en) * 2009-06-30 2010-12-30 Alberta Research Council Inc. Aircraft anti-icing fluids formulated with nanocrystalline cellulose
US20110140032A1 (en) * 2009-12-11 2011-06-16 Envirosource, Inc. Systems and methods for processing glycerol
US20110163257A1 (en) * 2003-09-23 2011-07-07 Mli Associates, L.L.C. Environmentally benign anti-icing or deicing fluids employing triglyceride processing by-products
US20110179696A1 (en) * 2010-04-02 2011-07-28 Envirosource, Inc. Systems and methods for processing glycerol
CN102899004A (en) * 2012-09-21 2013-01-30 湖北省高速公路实业开发有限公司 Green environment-friendly snow-melting liquid and preparation method thereof
CN103059812A (en) * 2013-01-18 2013-04-24 陕西师范大学 Low-corrosion complex chloride snow-melting agent
US8562854B2 (en) 2010-02-17 2013-10-22 Battelle Memorial Institute Compositions for deicing/anti-icing
US20150090422A1 (en) * 2013-09-30 2015-04-02 Panasonic Corporation Heat storage material composition and method for using heat storage material composition
RU2556675C2 (en) * 2013-08-29 2015-07-10 Закрытое акционерное общество "ЭКОС-1" Anti-icing fluid for aerodrome landing strips
RU2556676C2 (en) * 2013-08-29 2015-07-10 Закрытое акционерное общество "ЭКОС-1" Anti-icing fluid for aerodrome landing strips
US9080092B2 (en) 2010-02-17 2015-07-14 Battelle Memorial Institute Compositions for deicing/anti-icing
US9243176B2 (en) 2010-02-17 2016-01-26 Battelle Memorial Institute Compositions for deicing/anti-icing
US20170107679A1 (en) * 2015-10-14 2017-04-20 Andrew SCHELL Snow removal device
US9796896B2 (en) 2011-12-21 2017-10-24 Joan Lynch Fertilizer and fertilizer additive compositions and methods comprising by-products from the manufacture of fatty acid alkyl esters and/or biodiesel
MD4497C1 (en) * 2011-06-08 2018-02-28 Akzo Nobel Chemicals International B. V. Deicing composition

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US2222370A (en) * 1939-03-01 1940-11-19 Gulf Research Development Co Laying dust in coal mines
US2373727A (en) * 1941-04-10 1945-04-17 Intava Ltd Compositions for the prevention of the formation or accretion of ice on exposed surfaces
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US2436146A (en) * 1943-03-12 1948-02-17 Johnson March Corp Composition of matter
US2716068A (en) * 1952-10-21 1955-08-23 Jacob M Fain De-icing and freeze depressant composition
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Cited By (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4585571A (en) * 1985-03-15 1986-04-29 Michael A. Bloom Deicing compositions
US4778615A (en) * 1986-09-09 1988-10-18 The Dow Chemical Company Composition for treating particulate materials and a method for treating particles
US5238592A (en) * 1990-11-02 1993-08-24 Hoechst Aktiengesellschaft Liquid de-icing agent based on acetates and process for melting snow and ice on traffic surfaces with the aid of this agent
US5591375A (en) * 1992-09-24 1997-01-07 Lott; James A. Antifreeze compositions and uses
US5595788A (en) * 1992-09-24 1997-01-21 Lott; James A. Method of applying an antifreeze product
US5674428A (en) * 1992-09-24 1997-10-07 Kizer Industries, Inc. Anti-icing method
US5976400A (en) * 1997-09-19 1999-11-02 Thermo Solutions, Inc. Phase change material and use
US20030136940A1 (en) * 1997-09-30 2003-07-24 Richard Sapienza Environmentally benign anti-icing or deicing fluids
US20070063168A1 (en) * 1997-09-30 2007-03-22 Richard Sapienza Environmentally benign anti-icing or deicing fluids
US7229568B2 (en) * 1997-09-30 2007-06-12 Richard Sapienza Environmentally benign anti-icing or deicing fluids
RU2135540C1 (en) * 1997-10-20 1999-08-27 АООТ "Кирово-Чепецкий химический комбинат им.Б.П.Константинова" Antiicing composition
US20080054219A1 (en) * 1998-01-07 2008-03-06 Sears Petroleum & Transport Corporation Deicing solution
US20110168941A1 (en) * 1998-01-07 2011-07-14 Hartley Robert A Deicing solution
US8226846B2 (en) 1998-01-07 2012-07-24 Sears Petroleum & Transport Corporation Deicing solution
RU2127293C1 (en) * 1998-01-20 1999-03-10 Товарищество с ограниченной ответственностью "Ассоциация Легхим" Composition for preventing ice crust on roads
US6156226A (en) * 1998-06-10 2000-12-05 Thermo Fibergen, Inc. Liquid and solid de-icing and anti-icing compositions and methods for making same
RU2141500C1 (en) * 1998-07-22 1999-11-20 Общество с ограниченной ответственностью "Легхим" Composition for prevention of ice coating on roads
US6149833A (en) * 1998-10-02 2000-11-21 Clariant Gmbh Method of melting snow and/or ice and a deicer comprising sodium formate and sodium chloride
EP0992562A1 (en) * 1998-10-02 2000-04-12 Clariant GmbH De-icing composition comprising sodium formate and sodium chloride and its use
US7563386B2 (en) 1999-07-26 2009-07-21 Archer-Daniels-Midland Company De-icing composition and method
US20070295932A1 (en) * 1999-07-26 2007-12-27 Archer-Daniels-Mildland Company Di-icing composition and method
WO2001042388A3 (en) * 1999-11-30 2002-01-10 21St Century Medicine Prevention of ice nucleation by polyglycerol
US6616858B2 (en) 1999-11-30 2003-09-09 Greg Fahy Prevention of ice nucleation by polyglycerol
FR2820428A1 (en) * 2001-02-06 2002-08-09 Colas Sa Deicing composition used for roads, comprises a melting material and a solution of a hydrosoluble gelling agent
US6878308B2 (en) 2001-12-28 2005-04-12 Grain Processing Corp. Method for inhibiting freeze-clumping of aggregate materials
WO2003057794A1 (en) * 2001-12-28 2003-07-17 Grain Processing Corporation A method for inhibiting freeze-clumping of aggregate materials
US7105105B2 (en) 2002-10-28 2006-09-12 Battelle Memorial Institute Deicing/anti-icing fluids
US7169321B2 (en) 2002-10-28 2007-01-30 Battelle Memorial Institute Biobased deicing/anti-icing fluids
US20050087720A1 (en) * 2002-10-28 2005-04-28 Samuels William D. Deicing/anti-icing fluids
US20040079918A1 (en) * 2002-10-28 2004-04-29 Simmons Kevin L. Biobased deicing/anti-icing fluids
WO2005007279A3 (en) * 2003-07-10 2005-04-21 Univ Alaska Fairbanks Compounds for changing the physical properties of ice and methods of use thereof
US20080006794A1 (en) * 2003-09-23 2008-01-10 Richard Sapienza Environmentally benign anti-icing or deicing fluids employing triglyceride processing by-products
US20110163257A1 (en) * 2003-09-23 2011-07-07 Mli Associates, L.L.C. Environmentally benign anti-icing or deicing fluids employing triglyceride processing by-products
US8377328B2 (en) 2003-09-23 2013-02-19 Mli Associates, L.L.C. Environmentally benign anti-icing or deicing fluids
US8313667B2 (en) 2003-09-23 2012-11-20 Mli Associates, L.L.C. Environmentally benign anti-icing or deicing fluids employing triglyceride processing by-products
US7854856B2 (en) 2003-09-23 2010-12-21 Mli Associates, L.L.C. Environmentally benign anti-icing or deicing fluids employing triglyceride processing by-products
US20060284137A1 (en) * 2004-05-14 2006-12-21 Tran Bo L Methods and compositions for dust control and freeze control
US7398935B2 (en) 2004-05-14 2008-07-15 Nalco Company Methods and compositions for dust control and freeze control
EP1797154A4 (en) * 2004-09-30 2008-12-10 Nalco Co Product for dust control and freeze control
WO2006041515A1 (en) 2004-09-30 2006-04-20 Nalco Company Product for dust control and freeze control
EP2044166A4 (en) * 2006-07-20 2012-06-20 Nalco Co Methods and compositions for dust control and freeze control
US20100297358A1 (en) * 2009-05-22 2010-11-25 Envirotech Services, Inc. Alkylcellulose and salt compositions for dust control applications
US8945667B2 (en) * 2009-05-22 2015-02-03 Envirotech Services, Inc. Alkylcellulose and salt compositions for dust control applications
US20100327215A1 (en) * 2009-06-30 2010-12-30 Alberta Research Council Inc. Aircraft anti-icing fluids formulated with nanocrystalline cellulose
US8105430B2 (en) 2009-06-30 2012-01-31 Alberta Research Council Inc. Aircraft anti-icing fluids formulated with nanocrystalline cellulose
US8399394B2 (en) 2009-12-11 2013-03-19 Envirosource, Inc. Systems and methods for processing glycerol
US8088948B2 (en) 2009-12-11 2012-01-03 Envirosource, Inc. Systems and methods for processing glycerol
US20110140032A1 (en) * 2009-12-11 2011-06-16 Envirosource, Inc. Systems and methods for processing glycerol
US9080092B2 (en) 2010-02-17 2015-07-14 Battelle Memorial Institute Compositions for deicing/anti-icing
US8562854B2 (en) 2010-02-17 2013-10-22 Battelle Memorial Institute Compositions for deicing/anti-icing
US9243176B2 (en) 2010-02-17 2016-01-26 Battelle Memorial Institute Compositions for deicing/anti-icing
US8247600B2 (en) 2010-04-02 2012-08-21 Envirosource, Inc. Systems and methods for processing glycerol
US20110179696A1 (en) * 2010-04-02 2011-07-28 Envirosource, Inc. Systems and methods for processing glycerol
MD4497C1 (en) * 2011-06-08 2018-02-28 Akzo Nobel Chemicals International B. V. Deicing composition
US9796896B2 (en) 2011-12-21 2017-10-24 Joan Lynch Fertilizer and fertilizer additive compositions and methods comprising by-products from the manufacture of fatty acid alkyl esters and/or biodiesel
CN102899004A (en) * 2012-09-21 2013-01-30 湖北省高速公路实业开发有限公司 Green environment-friendly snow-melting liquid and preparation method thereof
CN103059812A (en) * 2013-01-18 2013-04-24 陕西师范大学 Low-corrosion complex chloride snow-melting agent
CN103059812B (en) * 2013-01-18 2014-11-12 陕西师范大学 Low-corrosion complex chloride snow-melting agent
RU2556676C2 (en) * 2013-08-29 2015-07-10 Закрытое акционерное общество "ЭКОС-1" Anti-icing fluid for aerodrome landing strips
RU2556675C2 (en) * 2013-08-29 2015-07-10 Закрытое акционерное общество "ЭКОС-1" Anti-icing fluid for aerodrome landing strips
US9732264B2 (en) * 2013-09-30 2017-08-15 Panasonic Corporation Heat storage material composition and method for using heat storage material composition
US20150090422A1 (en) * 2013-09-30 2015-04-02 Panasonic Corporation Heat storage material composition and method for using heat storage material composition
US20170107679A1 (en) * 2015-10-14 2017-04-20 Andrew SCHELL Snow removal device

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